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            <h2 class="title" style="clear: both"><a id="envlog_get_config"></a>DbEnv::log_get_config()</h2>
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      <pre class="programlisting">#include &lt;db_cxx.h&gt;

int
DbEnv::log_get_config(u_int32_t which, int *onoffp)</pre>
      <p>
         The <code class="methodname">DbEnv::log_get_config()</code> method returns whether the specified
         <span class="bold"><strong>which</strong></span> parameter is currently set or
         not. You can manage this value using the
         <a class="xref" href="envlog_set_config.html" title="DbEnv::log_set_config()">DbEnv::log_set_config()</a>
         method.
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      <p>
         The <code class="methodname">DbEnv::log_get_config()</code> method may be called at any time during
         the life of the application.
    </p>
      <p>
         The <code class="methodname">DbEnv::log_get_config()</code> <span>
            
            <span>
                method either returns a non-zero error value or throws an
                exception that encapsulates a non-zero error value on
                failure, and returns 0 on success.
            </span>
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      <div class="sect2" lang="en" xml:lang="en">
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              <h3 class="title"><a id="idp8337656"></a>Parameters</h3>
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                <h4 class="title"><a id="idp8337008"></a>which</h4>
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          <p>
                          The <span class="bold"><strong>which</strong></span> parameter is the message
                          value for which configuration is being checked. Must be set to one of the following values:
                     </p>
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              <li>
                <p><a id="log_get_config_DB_LOG_DIRECT"></a>
                  <code class="literal">DB_LOG_DIRECT</code>
            </p>
                <p>
                     System buffering is turned off for Berkeley DB log files to avoid double
                 caching.
            </p>
              </li>
              <li>
                <p><a id="log_get_config_DB_LOG_DSYNC"></a>
                  <code class="literal">DB_LOG_DSYNC</code>
            </p>
                <p>
                 Berkeley DB is configured to flush log writes to the backing disk before
                 returning from the write system call, rather than flushing log writes
                 explicitly in a separate system call, as necessary.  
            </p>
              </li>
              <li>
                <p><a id="log_get_config_DB_LOG_AUTO_REMOVE"></a>
                  <code class="literal">DB_LOG_AUTO_REMOVE</code>
            </p>
                <p>
                 Berkeley DB automatically removes log files that are no
                 longer needed.
            </p>
              </li>
              <li>
                <p><a id="log_get_config_DB_LOG_IN_MEMORY"></a>
                  <code class="literal">DB_LOG_IN_MEMORY</code>
            </p>
                <p>
                 Transaction logs are maintained in memory rather than on disk.  This
                 means that transactions exhibit the ACI (atomicity, consistency, and
                 isolation) properties, but not D (durability).
            </p>
              </li>
              <li>
                <p><a id="log_get_config_DB_LOG_ZERO"></a>
                  <code class="literal">DB_LOG_ZERO</code>
            </p>
                <p>
                 All pages of a log file are zeroed when that log file is created. 
            </p>
              </li>
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        <div class="sect3" lang="en" xml:lang="en">
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                <h4 class="title"><a id="idp8348200"></a>onoffp</h4>
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          <p>
                          The <span class="bold"><strong>onoffp</strong></span> parameter references
                          memory into which  the configuration of the specified <span class="bold"><strong>which</strong></span> parameter is copied.
                     </p>
          <p>
                         If the returned <span class="bold"><strong>onoff</strong></span> value is zero, the
                         parameter is off; otherwise, on.
                     </p>
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      <div class="sect2" lang="en" xml:lang="en">
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              <h3 class="title"><a id="idp8348632"></a>Class</h3>
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        <p>
                    <a class="link" href="env.html" title="Chapter 5.  The DbEnv Handle">DbEnv</a>  
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      <div class="sect2" lang="en" xml:lang="en">
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              <h3 class="title"><a id="idp8338088"></a>See Also</h3>
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        <p>
                        <a class="xref" href="lsn.html#loglist" title="Logging Subsystem and Related Methods">Logging Subsystem and Related Methods</a>, 
                        <a class="xref" href="envlog_set_config.html" title="DbEnv::log_set_config()">DbEnv::log_set_config()</a>
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